| Month | High | Low | Rain | Wet days | Score |
|---|---|---|---|---|---|
| January | 1.7° | -2.7° | 47mm | 13.3 | 11 |
| February | 3.9° | -2.1° | 26.2mm | 9.3 | 24 |
| March | 9.2° | 1.1° | 27.7mm | 10.9 | 42 |
| April | 14.8° | 4.4° | 25.1mm | 8.8 | 66 |
| May | 20.2° | 8.8° | 40.9mm | 11.4 | 77 |
| June | 23.9° | 12.6° | 39.2mm | 11.5 | 77 |
| July | 28.6° | 15.9° | 21.6mm | 6 | 82 |
| August | 27.5° | 15.3° | 21.4mm | 6.5 | 85 |
| September | 21.6° | 11.1° | 29.4mm | 8.1 | 84 |
| October | 13.2° | 5.9° | 40mm | 12.5 | 53 |
| November | 6.7° | 1.7° | 44.2mm | 13.3 | 30 |
| December | 1.8° | -2.4° | 48.3mm | 13.9 | 11 |
January in Kelowna averages a daily high of 1.7°C with nights around -2.7°C. Expect roughly 13.3 wet days totalling 47mm. A hard month to visit for comfort alone.
February in Kelowna averages a daily high of 3.9°C with nights around -2.1°C. Expect roughly 9.3 wet days totalling 26.2mm. A hard month to visit for comfort alone.
March in Kelowna averages a daily high of 9.2°C with nights around 1.1°C. Expect roughly 10.9 wet days totalling 27.7mm. Demanding conditions — pack for it and plan indoor options.
April in Kelowna averages a daily high of 14.8°C with nights around 4.4°C. Expect roughly 8.8 wet days totalling 25.1mm. Generally workable, with some weather to plan around.
May in Kelowna averages a daily high of 20.2°C with nights around 8.8°C. Expect roughly 11.4 wet days totalling 40.9mm. Comfortable conditions for being outdoors all day.
June in Kelowna averages a daily high of 23.9°C with nights around 12.6°C. Expect roughly 11.5 wet days totalling 39.2mm. Comfortable conditions for being outdoors all day.
July in Kelowna averages a daily high of 28.6°C with nights around 15.9°C. Expect roughly 6 wet days totalling 21.6mm. Comfortable conditions for being outdoors all day.
August in Kelowna averages a daily high of 27.5°C with nights around 15.3°C. Expect roughly 6.5 wet days totalling 21.4mm. Comfortable conditions for being outdoors all day.
September in Kelowna averages a daily high of 21.6°C with nights around 11.1°C. Expect roughly 8.1 wet days totalling 29.4mm. Comfortable conditions for being outdoors all day.
October in Kelowna averages a daily high of 13.2°C with nights around 5.9°C. Expect roughly 12.5 wet days totalling 40mm. Demanding conditions — pack for it and plan indoor options.
November in Kelowna averages a daily high of 6.7°C with nights around 1.7°C. Expect roughly 13.3 wet days totalling 44.2mm. A hard month to visit for comfort alone.
December in Kelowna averages a daily high of 1.8°C with nights around -2.4°C. Expect roughly 13.9 wet days totalling 48.3mm. A hard month to visit for comfort alone.
Each month scores out of 100. It starts at 100 and loses points for daytime highs outside a 20–27°C band, for wet days, and for nights below 2°C. Nothing else is weighted in — no crowd data, no prices, no opinion. Kelowna peaks at 85.
Based on 30 years of records, May–September scores highest for comfort in Kelowna, balancing daytime temperature against rainfall.
July is the warmest, averaging a daily high of 28.6°C.
December is the wettest, averaging 48.3mm of rain across roughly 13.9 wet days.
January is the coolest month, with average daily highs around 1.7°C.